Rarefied piezometric uptake apparatus and method for measuring gaseous uptake
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsMatthew J. Paul, Joshua David Feldman
Life of this patent
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Abstract
A rarefied piezometric uptake apparatus and method for measuring gaseous uptake for large solid samples with little or no sample preparation. Past systems and methods require extensive sample preparation. The method includes providing a rarefied piezometric uptake apparatus having a dosing chamber and uptake chamber in an improved selective fluid communication. The apparatus and method improve the measurement of gaseous uptake into solid samples resulting in improved prediction of gas migration through solid samples such as geologic formations.
Claims20
A rarefied piezometric uptake apparatus comprising:
- a dosing chamber in selective fluid communication with an uptake chamber, the uptake chamber having a geometry that permits insertion of a solid sample with spacing between the solid sample and at least one wall of the uptake chamber;
- a vacuum source arranged and disposed to draw a medium vacuum on the dosing chamber and uptake chamber sufficient to induce rarefied flow in the sample pores;
- and
- a pressure measurement device arranged and disposed to measure a pressure in the dosing chamber.
A method for measuring gaseous uptake for a solid sample, the method comprising:
- providing a rarefied piezometric uptake apparatus having a dosing chamber and uptake chamber in selective fluid communication;
- positioning the solid sample in the uptake chamber;
- outgassing the dosing chamber and uptake chamber to a medium vacuum;
- isolating the uptake chamber from the dosing chamber;
- injecting a predetermined amount of a working gas into the dosing chamber;
- releasing the working gas from the dosing chamber into the uptake chamber;
- and measuring a pressure in the uptake apparatus with a pressure measurement device to determine an uptake property of the solid sample.
Dependencies are inferred from the claim text.